Caltrain’s SF Expansion: One of the Most Expensive in the World
The San Francisco Caltrain extension is a proposed project to extend rail service from 4th and King Station to Transbay Terminal in downtown San Francisco, California. The project includes building a new tunnel under San Francisco Bay, extending Caltrain’s tracks from its current terminus at 4th and King Station to the Transbay Transit Center (TTC) …
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